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Journal : Life Science

Kepadatan Bakteri Biofertilizer Cair Air Kelapa Menggunakan Bakteri Pelarut Fosfat (Bacillus spp.) Asal Tanah Gambut Kalimantan Barat: Density of Liquid Biofertilizer Coconut Water Bacteria Using Phosphate Solubilizing Bacteria (Bacillus spp.) from West Kalimantan Peat Soil Sari, Lala; Rahmawati; Khotimah, Siti; Mukarlina
Life Science Vol. 14 No. 1 (2025): May 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/unnesjlifesci.v14.i1.1673

Abstract

Biofertilizer is an environmentally friendly fertilizer, has a long release time so it can be absorbed by plants long enough, and has enzymatic activities such as binding nitrogen and dissolving phosphate. Phosphate solubilizing bacteria (BPF) can dissolve phosphate that was previously unavailable to become available. This research aims to further examine the potential of BPF isolates from Kalimantan as a liquid biofertilizer agent using coconut water as a medium. The research was conducted for 3 months, from June to August 2023 at the Microbiology Laboratory, Biology Department, Faculty of Mathematics and Natural Science Tanjungpura University, Pontianak. This research used a Completely Randomized Design (CRD) with 8 treatments and 3 replications using the Total Plate Count method. The results of the study showed that the highest treatment is a treatment of A4 on day 6 with an average density of 9,4x108 CFU/mL. The BPF which has the highest potential as a biofertilizer is found in treatment A4, the combination bacterial isolates of Bacillus sp1 and Bacillus sp2, supported by the high population treatment of A4 during each storage. Liquid biofertilizers have many advantages compared to solid biofertilizers, including having a higher number of microbial cells, longer shelf life, greater protection against the environment and better effectiveness in the field. This study can provide information on the density of liquid biofertilizer bacteria using environmentally friendly coconut water media for the community by using phosphate-solubilizing bacteria (Bacillus spp.) from West Kalimantan peat soil.
Potensi Bakteri Pelarut Fosfat dan Bakteri Penghasil IAA Asal Tanah Gambut terhadap Perkecambahan  Tanaman Jagung (Zea mays L.) Anggita, Via; Khotimah, Siti; Rahmawati; Mukarlina
Life Science Vol. 13 No. 2 (2024): November 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/unnesjlifesci.v13.i2.1729

Abstract

Phosphate solubilizing bacteria and IAA-producing bacteria are bacteria that can help plant growth through their use by increasing the availability of phosphate (P) in the soil and helping plants absorb nutrients in the soil. This study aims to determine the effect of phosphate solubilizing bacteria and IAA-producing bacteria isolated from peat soil on the germination of corn (Zea mays L.) plants grown on peat soil.  This research was conducted from June to September 2023 with a completely randomized design (CRD). Testing the effect of phosphate-solubilizing and IAA-producing bacteria was carried out using the method of soaking seeds and watering bacterial suspensions on plants.  The results showed that A5 treatment had a significant effect on the number of leaves parameter, with A5 treatment (Bacillus cereus PF12, P13 and PF16 + Pseudomonas stutzeriIAA1) producing a germination percentage (100%), the number of leaves (5.09 strands) while the parameters of plant height and root length showed that all treatments were not significantly different.    
Potensi Penambahan Kombinasi Bakteri Pelarut Fosfat dan Penambat Nitrogen terhadap Jumlah Daun dan Lebar Daun Cabai Rawit Varietas Dewata F1: Potential of Adding a Combination of Phosphate-Solubilizing and Nitrogen-Fixing Bacteria to the Number of Leaves and Leaf Width of Dewata F1 Variety of Cayenne Pepper Ikramullah, Fiza; Rahmawati; Khotimah, Siti; Mukarlina
Life Science Vol. 14 No. 2 (2025): November 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/unnesjlifesci.v14.i2.1736

Abstract

The combination of phosphate-dissolving and nitrogen-fixing bacteria can increase plant productivity and nutrient availability as an environmentally friendly biofertilizer candidate. The purpose of the study was to determine the effect of a combination of bacterial strains P1, P2, P3, N1, N2, and N3, on the growth of cayenne pepper, and to determine the best treatment of the combination of bacterial strains. The research was conducted from May to August 2023. The research was carried out by watering bacterial isolates on the cayenne pepper planting media. Observations were made for 2 months after transplanting. Data analysis used a completely randomised design with 9 treatment levels, namely, KP, KN, A (P1+P2+P3+N1); B (P1+P2+P3+N2); C (P1+P2+P3+N3); D (PI+P2+P3+N1+N2); E (P1+P2+P3+N1+N3); F (P1+P2+P3+N2+N3); G (P1+P2+P3+N1+N2+N3), with 4 replications. The results showed that the combination of phosphate-solubilising bacteria strains (P1, P2, P3) and nitrogen-fixing bacteria strains (N1, N2, N3) had a significant effect on the parameters of the number of leaves and leaf width of cayenne pepper (Capsicum frutescens L.). Treatment A (P1+P2+P3+N1) is a combination of bacterial strains that gives the best results on leaf width (5.20 cm) and number of leaves (47.75 strands). This biofertilizer enhances plant productivity and prevents environmental pollution.  
Co-Authors Abi Muhlisin Ade Indriani Afri Juliandari, Kriska Agus Wibowo, Muhammad Agustin, Shinta Rahmadina agustina, dwi pela Ahmad Wisnu Wardhana, Ahmad Wisnu Aini, Adina Nur Cahya Alfiyani, Isna Amallia Putri Ana Majdawati Anggita, Via Anipah, Aan Anitasari, Hening Ari Hepi Ari Hepi Yanti Ari Hepi Yanti Ari Widiyantoro Astuti, Andari Wuri Astuti, Sri Andar Puji Aswan, Nur Atika, Andi Rafika Aulia, Afifah Zakiyatul Ayu, Nuryan Azzahra, Talitha Bakhtiar, Rahmat Bayu Dwi Prawiga Budianti, Mimik Retno Cahya Damarjati Cesarina, Aqlina Dedi Haswan Didan, Muhamad Duwi Kurnia Nugraheni Dwi Gusmalawati Edi Setiawan Elfiyanti Elfiyanti Elfiyanti Elfiyanti, Elfiyanti Elvi Rusmiyanto Pancaning Wardoyo, Suci Lestari, Mukarlina, Endang Sawitri Fadilah, Siti Fadilah Faid, Afriza Nur Faizah, Yuniar Laeli Nur Farros, Muhammad Labib Fatimah, Diani Fatmawati Fatmawati Fikriah, Ika Filia Prima Artharina Firman Saputra Firman Saputra Habibie, Alfiesyahrianta Hanis Kusumawati Rahayu Hapiz, Hapiz Harun Joko Prayitno Hidayah, Okhtafiana Nor Husna Husna I Gusti Ngurah Antaryama Idris, Fagil Rananda Ikramullah, Fiza Indah Damayanti, Indah Indriani, Ade Insani, Arika Nur Irwan Lovadi Ishak, Asnor Juraiza Jannah, Alif Fakul Jayuska, Afghani Jayusman, Hendra Julaeha, Eha Junariah, Siti Juniarti, Shella Mida Kamaria, Sitti Kurniawan, Pratama Haris Kustiati Layaman Layaman, Layaman Lianema Doy Meilani Lira Herlinda Lisandra, Aotza Mahdani, Ajriya Maina, Annin Dya Masnur Turnip Meryska, Refi Muhammad Fajar Muhammad Luthfi Muhammad Tisna Nugraha, Muhammad Tisna Muhayah, Siti Mukarlina Mukarlina - Mukarlina -, Mukarlina Mukarlina, Mukarlina Nabila, Bq. Nanda, A. Luthfiah Nensi, Yepni Nisa, Pia Khoirotun Noor Alis Setiyadi Noviana Sari, Evin Nugrahayu, Eka Yuni Nugroho, Suryanto Nur Asiah Nuralam, Muhammad Fathan Nurhaelah, Nurhaelah Nurhayati, Ummy A'isyah Nurlaela, Fitri nurul khotimah Pranindyastuti, Tika Puji Ardiningsih Purnamasari, Pupu Purwaningrum, Evi Kurniasari Purwati, Rati Putri, Culeksi Yusie Noviana Putri, Hanifah Adilla Putri, Nabiela Annisa Puwaningsih, Wahyu Rachman, Syarifah Awwaliyyah Rafdinal Rafdinal Rahma, Aulia Rahmat, Muhammad Rahmawati Rahmawati Rahmawati, Diva Rahmawati, Rahmawati Ramdani, Wawan Rani, Diah Puspa Rasitah, Hj Ratna Wardani Ratnasari Diah Utami Ratnawati, Puji Rifanti, Siti Nur Irliana Rikhsan Kurniatuhadi, Rikhsan Riyandi Riyandi Riza Linda Riza Linda Riza Linda Rizki, Yusron RIZKY WULANDARI B11111032, RIZKY WULANDARI Rizqullah, Tamam Zaidan Rosita Rosita RR. Ella Evrita Hestiandari Rupa, Martina Kaisriani Sabrina, Annida Sadlina, Radifan Ahmad Saihan, Saihan Salsabila, Naila Cantika Sandra, Nurheliza Deli Sanjaya, Regina Anastasia Santoso, Bayu Aji Saputra, Afgani Raj Muharman Saputra, Erdin Jhaya Saputra, Firman Saputra, Rudi Sari Yulianti, Sari Sari, Atika Mayang Sari, Evin Noviana Sari, Lala Sari, nova Nurwinda Sari, Risma Indah Sari, Septi Kurnia Selvira, Aisyah Sepiana, Anggun Septiana Sulistiawati Setyawati, Ariani Nur Sherlyna, Yunia Shinta Permata Sari Siti Ifadatin Siti Juariah SITI KHOLIFAH Siti Komariyah Slamet Riyadi Subagio, Kiki Jayapratama Sudarso, Sulistiawati Surya Abi Alfariz Susanti, Olif Rina Syafira, Mediva Syamsiar, Syamsiar Syutarman, Syutarman Taqiyuddin, Muhammad Fathi Thamrin Usman Tri Lestari Tri Rima Setyawati Triana Rosalina Noor, Triana Rosalina Turnip, Masnur Ulyah, Rochimah Thul Usman Radiana Usriyah, Lailatul Veryliana Purnamasari, Veryliana Wahdina - Wahdina - Wahdina -, Wahdina Wahyu Purwaningsih Wardatul Jannah, Wardatul Wibowo, Hutomo Judhi Cristanto Wijayaningsih, Rini Windiyanti, Riska Yoga Achmad Ramadhan yuliawati, eni Yulitaningrum, Siti Khoirul Yuliyanti, Siti Nur Yuni, Eka Yunita, Sherli Zaen, Muhammad Fauzan Zaman, Ridha Herwidia Zulfa Zakiah ‘Ulya, Nurul Kholisatul